Finding the Fourth Proportional to 78,766.20, 108,697.54 and 42,956.44

Step by Step Solution

1. Step 1: Write the proportion equation
   78,766.20 : 108,697.54 = 42,956.44 : x
2. Step 2: Convert to fraction form
   78,766.20/108,697.54 = 42,956.44/x
3. Step 3: Cross multiply
   78,766.20x = 108,697.54 × 42,956.44
4. Step 4: Simplify right side
   78,766.20x = 4,669,259,355.16
5. Step 5: Solve for x
   x = 4,669,259,355.16/78,766.20
6. Step 6: Final answer
   x = 59,279.99